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A bird files between two trains approach...

A bird files between two trains approaching each other with constant speed of 10 m/s each. Trains are initially 1 km apart. The bird starts from the first train and as it arrives just in front of the other train it turns and continues the same process. The average velocity of the bird till it is sandwiched between the trains is:

A

0

B

`10 m//s`

C

` 20 m//s `

D

Depends on velocity of bird

Text Solution

Verified by Experts

The correct Answer is:
B
Total displacement of the bird = 500 metre .
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Total time taken by the bird `= (1000)/(10 +10 ) =(1000)/(20 ) = 50 ` second , ` |oversetto v_(avg) | = (500)/( 50) =10 m/second `
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